NCSA
# NCSA

NCSA may refer to:

* National Cadet Special Activities, aviation programs run by the American Civil Air Patrol
* National Center for Supercomputing Applications, a computer science research center in Urbana, IL
   * NCSA Common log format, a file format for log files produced by web server software
   * NCSA HTTPd, a web server that introduced the Common Gateway Interface
   * NCSA Mosaic, an early web browser instrumental to the popularization of the World Wide Web
   * NCSA Telnet, a software implementation of the Telnet protocol
   * University of Illinois/NCSA Open Source License, a free software license
* National Center for Supercomputing Applications (Bulgaria), a computer science research center in Sofia, Bulgaria
* National Child Search Assistance Act, a United States federal law enacted in 1990
* National Cyber Security Authority (Israel), a government organization merged into the Israeli National Cyber Directorate
* NATO Communications and Information Systems Services Agency, a deactivated agency, formerly within NATO
* Next College Student Athlete, a company facilitating collegiate athletic recruiting
* North Central Sociological Association, a regional American professional organization
